The Old World rats and mice, part of the subfamily Murinae in the family Muridae, comprise at least 519 species. Members of this subfamily are called murines. In terms of species richness, this subfamily is larger than all mammal families except the Cricetidae and Muridae, and is larger than all mammal orders except the bats and the remainder of the rodents.
The white-toothed rats, genus Berylmys, are a group of Old World rats from Asia.
The small white-toothed rat is a species of rodent in the family Muridae. It is found in Cambodia, Laos, Myanmar, Thailand, and Vietnam.
Bower's white-toothed rat is a species of rodent in the family Muridae native to southeast Asia.
Kenneth's white-toothed rat is a species of rodent in the family Muridae. It is found in China, India, Myanmar, and Vietnam.
The Manipur bush rat, also known as Hume's rat or Hume's hadromys, is a species of rodent in the family Muridae. It is found in northeastern India, and is listed as endangered.
The lesser small-toothed rat or western small-toothed rat is a species of rodent in the family Muridae. It is found only in West Papua, Indonesia.
The Tenasserim white-bellied rat is a species of rodent in the family Muridae. It is named after the Tenasserim Hills and is found above 1,000 m in forested limestone mountainous areas. Its distribution includes India, Myanmar, Thailand, Cambodia (southern end of the Cardamom Mountains, Laos and Vietnam, and China.
The broad-toothed rat is a species of rodent in the family Muridae.
The Sikkim rat is a species of rodent in the family Muridae.
Millet's leopoldamys is a species of rodent from the family Muridae. It lives in the Langbian highlands of southern Vietnam, although its distribution limits are currently unresolved. It is listed as Least Concern on the IUCN Red List, and though only a handful of museum specimens signify its existence, it is presumed to have a high, stable population. There are no apparent major threats to the species, and it occurs in a number of protected Vietnamese areas. Millet's leopoldamys is a large, terrestrial omnivore that prefers montane forest, but is tolerant of secondary forest.
The Yunnan bush rat is a species of rodent from the family Muridae. It has just recently been released from synonymy with the Manipur bush rat, and so there is very little information about it. It was recognized as a separate species due to its much larger body size in comparison to the Manipur bush rat, relatively shorter tail, pure white underparts as opposed to gray, significantly shorter diastema, and shorter palate in relation to its skull. It is located only in Yunnan province of the People's Republic of China, where it known only from Tongbiguan Nature Reserve in Ruili City.
Rattini is a very large, diverse tribe of muroid rodents in the subfamily Murinae. They are found throughout Asia and Australasia, with a few species ranging into Europe and northern Africa. The most well-known members of this group are the true rats, several species of which have been introduced worldwide.
